I'm probably no help because I started with the gentle approach and got fed up with my dds behaviour. (although shes older than yours). As soon as she gets in she carries on like we are pulling her nails off one by one! I swear the neighbours must hate her bath time some days. I just plonk her in and tell her to sit...most of the time she doesnt. As soon as the water goes over her, she screams blu murder. I just keep going as quickly as possible til its all finished. Some days I get dh to help hold her still and wash her... Its sounds mean and probably is but she needs a wash. And I am not hurting her. I cut dds hair to a bob because she wouldnt let us brush it or tie it back. Much more managable now.

Its a hard one, especially if her hair is knotting up. You can either try the tough approach or cut the hair short. Hair will grow back and she might be older when it does and start liking the bath! Its funny how they love it one day and loath it the next!

GOOD LUCK